JP3860557B2 - Circular plug connector for shielded electrical cable - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a circular plug-in connector for a shielded electric cable, and is provided with an insulator disposed in a support body and a cable screw fixing member, and the cable screw fixing member is pressed and tightened. The present invention relates to a type comprising a member and a metal screw sleeve, wherein the pressing / clamping member is pressed against the insulator when the screw sleeve is put on the support.
[0002]
[Prior art]
This type of plug-in connector can utilize shielded electrical cable together with quick connect technology instead of traditional unshielded cables and wires that are connected to each other in a non-hazardous region by quick connect technology Is needed to do so.
[0003]
According to the prior art, plug connectors are known in which the shielding is further expanded to a corresponding plug member via a metal sleeve or a metal-coated sleeve or via a central conductor.
[0004]
From DE 198 37 530, a cable introduction is known in which the cable is sealed by means of a conductive sliding ring which is in contact with a conductive push screw.
[0005]
[Patent Document 1]
German Patent No. 1873530 specification [0006]
[Problems to be solved by the invention]
The object of the present invention is to improve the plug connector of the type mentioned at the outset so that the plug connector can also be used with shielded electrical cables or conductors, even within the scope of the quick-connect technology, It is to provide such that the ring can be selectively expanded through a metal outer sleeve, through an integrated central conductor, or simultaneously through both conductive members. Depending on different conditions, shielding can be achieved via the central conductor or outer sleeve.
[0007]
[Means for Solving the Problems]
In order to solve this problem, in the present invention, a contact element is provided for contact connection of a cable shield of an electric conductor, and the contact element is disposed on the side of the insulator facing the cable connection portion. The contact element has a bent spring elastic end as a flat bending member, and the end is provided in a notch arranged in the axial direction on the outer wall of the insulator. The contact element has an opening, a cable shield is introduced into the opening, the cable shield is received in the notch, and is clamped at the bent spring-elastic end The bent spring-elastic end of the contact element is fixed so that the spring-elastic end is bent when the screw sleeve is covered. Part is as being arranged to be pressed against the inner wall of the threaded sleeve.
[0008]
【The invention's effect】
Advantageous embodiments of the invention are described in claims 2-5.
[0009]
The advantages afforded by the invention are in particular the already known plug connectors which can be equipped or modified with a simple construction according to the invention, and the shielding of the electrical conductors in the use of contact elements. Is further extended to the corresponding plug-in member via a conductive outer sleeve or, for example, via a conductor arranged in the center of the plug-in connector or via both members. In this case, specially shaped contact elements are incorporated into the already known insulator.
[0010]
In this case, one side of the contact element faces the contact part incorporated in the insulator, whereas the other side has an opening for the shield braid to be twisted of the shielded electrical cable, A bent spring-elastic contact end, and the contact end fastens and fixes the shield braid in a notch provided in the insulator.
[0011]
In this case, the bent spring-elastic contact end is shaped to contact and connect to a metal screw sleeve surrounding the plug-in connector.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail using the illustrated examples.
[0013]
FIG. 1 is an exploded perspective view of the plug-in connector 1 according to the present invention that is completely provided. The following members are shown starting from the lower left and moving toward the upper right. First, an insertion portion 2 that is made of metal and can be screwed to a corresponding insertion member is locked to an insulating support 3, and a contact element for signal transmission (shown in detail here) is supported in the support 3. Not) is held.
[0014]
The contact part 10 is shown with particular emphasis, and the IDC terminal 19 in the connection-side part 14 of this contact part 10 faces into a corresponding accommodating part 21 in the form of a slit in the insulator 20 (see also FIG. 2a). reference). A conductor guide passage 22 is also provided in the insulator 20, and an individual electric conductor 54 for guiding a signal is guided in the conductor guide passage 22. The insulator 20 is followed by a pressing / clamping member 30, and the electric cable 50 is fixed by the pressing / clamping member 30 while being prevented from being pulled out from the plug-in connector 1.
[0015]
A contact element 25 is inserted between the insulator 20 and the cable screw fixing member. The contact element 25 will be further described later.
[0016]
The contact element 25 is followed by a metal screw sleeve 40. With this screw sleeve 40, the plug-in connector 1 is integrally coupled after the cover casing 3 is screwed. Further, a shield sleeve 45 follows, which forms an electrical contact connection from the screw sleeve 40 to the metal plug 2 on the insulating support 3 during corresponding positioning.
[0017]
In FIG. 2a, the contact portion 10 already shown in FIG. 1 is shown together with its important individual parts. The contact portion 10 is formed from both pieces of a plug-in portion 12 and a connection-side portion 14. In this case, the contact portion 10 may be integrally manufactured. The portion on the insertion side has an insertion pin 15 and a bush 16 for making contact connection with the corresponding insertion member, and a pin-like additional portion 17 of the portion 14 on the connection side is inserted into the bush 16. Can be joined. This portion 14 is fixedly secured in the insulator 20 by a detent spring 18. The second side of the connection-side portion 14 is formed as an IDC terminal 19, and a contact element 25 having a bent portion 26 provided for this purpose is pushed into the IDC terminal 19.
[0018]
The contact element 25 comprises a circular opening 29 arranged asymmetrically in the intermediate region 27, a bent portion 26 bent 90 °, and a spring-elastic end bent at least 35 ° with respect to the intermediate region 27. And a U-shaped flat bending member. When assembled, the contact element 25 is connected in contact with the IDC terminal 19 in the accommodating part 21 ′ on the bent part side 26, and in the axial direction of the insulator 20 on the other side having the bent spring elastic end part 28. It is tightened in the arranged cutout 23.
[0019]
In FIG. 2b, the insulator 20 is rotated by about 180 ° and is shown from the viewpoint as viewed from the pressing / clamping member 30, whereby the position of the contact element 25 on the surface on the insulator side is again clear. Shown in In this case, the side cutouts 23 arranged in the axial direction have a stepped structure, and are provided with a protrusion 23 ', and a cable shield (cable shield) is provided so as to surround the protrusion 23'. ) 52 can be guided, and it can also be seen that the spring-elastic end 28 of the contact element 25 enters the notch 23 via this cable shield 52.
[0020]
Further, as can be seen from FIG. 2 a, a collar 32 is integrally formed on the side of the pressing / clamping member 30 facing the insulator 20. The collar 32 has a raised polarization means 34 which engages a corresponding notch 24 in the insulator 20.
[0021]
Furthermore, the collar 32 is provided with a further notch 36 over the entire height of the collar 32, in which a contact element 25 with a bent spring-elastic end 28 extends.
[0022]
The cable shield 52 is twisted prior to assembly of the plug connector and passed through the opening 29 in the contact element 25.
[0023]
Next, the individual conductor 54 is pushed into the conductor guide passage 22 of the insulating member, and the pressing / clamping member 30 including the contact element 25 is attached to the insulator 20.
[0024]
In this case, the twisted cable shield 52 is inserted into the notch 23 formed in the axial direction on the outer wall of the insulator 20, and at this time, the bent spring elastic end portion 28 is twisted together with the twisted cable shield 52. Push into the notch 23.
[0025]
The individual conductor end 54 and the cable shield 52 protruding beyond the insulator 20 are cut, and the insulator 20 is pushed into the support 3 by a cable screw fixing member. In this case, the individual conductor 54 guided in the conductor guiding passage 22 is cut by an IDC terminal contact (not shown here) inserted into the support 3 and firmly joined, and at the same time to the contact portion 10. A conductive connection is created.
[0026]
Next, the screw sleeve 40 is put on and fixed to the support 3 with screws. In this case, the bent spring-elastic end 28 is fitted into the groove 5 in the support 3 provided for this purpose and pressed against the inner wall 42 of the outer screw fixing member at the bent edge 28 '. Thereby, not only the inner shielding is performed, but also the conductive second outer shielding is performed via the screw sleeve 40. However, in this shielding, the sleeve 45 is put on the screw sleeve 40 and the insertion part 2, so that the insulating part of the support 3 is shown in the insertion connector 1 shown in the completed state in FIG. It becomes effective only after being bridged.
[0027]
In FIG. 4, the contact element 25 has a metallic edge at its bent edge 28 ′ to guide the potential of the cable shield 52 guided through the opening 29 and in contact with the spring-elastic end 28. The state of being pressed against the inner wall 42 of the screw sleeve 40 is shown in detail. On the other side of the contact element 25, the IDC terminal 19 positioned in the housing portion 21 is contact-connected to the bent portion 26 inserted and joined in the housing portion 21 ′.
[0028]
Thus, there is a possibility of transmitting the shielding potential inside the plug-in connector 1 by the contact part 10 and the contact element 25 or by the screw sleeve 40 and sleeve 45 via the outer sleeve or both means. To do.
[Brief description of the drawings]
FIG. 1 is an exploded view of a circular plug connector.
2a is an exploded view of the electrical connection of the inner conductor. FIG.
2b shows the insulator rotated together with the contact element by 180 ° with respect to FIG. 2a.
FIG. 3 is an isometric view of the completed round plug connector.
FIG. 4 is a detailed view of the contact connection between the contact element and the sleeve.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Insertion connector, 2 Insertion part, 3 Support body or support casing, 5 Groove, 10 Contact part, 12 Insertion side part, 14 Connection side part, 15 Insertion pin, 16 Bushing, 17 Additional part, 18 Detent spring, 19 IDC terminal, 20 insulator, 21 receiving portion, 21 ′ receiving portion, 22 conductor guide passage, 23 notch, 23 ′ protruding portion, 24 notch, 25 contact element, 26 bent portion, 27 intermediate region, 28 end portion, 28 'bent edge, 29 opening, 30 pressing / clamping member, 32 collar, 34 polarization means, 36 notch, 40 screw sleeve, 42 inner wall, 45 shield sleeve, 50 electric cable, 52 cable shield (cable shield), 54 Individual conductor

Claims (5)

A circular plug-in connector for a shielded electrical cable (50), comprising an insulator (20) disposed in a support (3) and a cable screw fixing member, the cable screw The fixing member consists of a pressing / clamping member (30) and a metal screw sleeve (40), and the pressing / clamping member (30) is insulated when the screw sleeve (40) is covered with the support (3). In a form adapted to be pressed against the body (20),
A contact element (25) is provided for contact connection of the cable shield (52) of the electrical conductor (50), and the contact element (25) faces the cable connection part of the insulator (20). Is located on the side,
The contact element (25) is provided with a bent spring-elastic end (28) as a flat bending member, and the end (28) is disposed axially on the outer wall of the insulator (20). Extends beyond the protrusion (23 ') provided in the notch (23),
The contact element (25) has an opening (29), a cable shield (52) is introduced into the opening (29), and the cable shield (52) is received in the notch (23). , Clamped at the bent spring elastic end (28),
The bent spring-elastic end (28) of the contact element (25) is connected to the screw sleeve (40) by the bent edge (28 ') of the spring-elastic end (28). Circular plug connector for shielded electrical cable, characterized in that it is arranged to be pressed against the inner wall (42) of The contact element (25) has a bent portion (26) at a position facing the spring elastic end portion (28), and the bent portion (26) is formed of the insulator (20). The insertion connector according to claim 1, wherein the insertion connector is inserted into a slit-like accommodation portion (21 ′). The IDC terminal (19) is disposed in the slit (21), and the IDC terminal (19) is contact-connected to the bent portion (26) of the contact element (25). Plug-in connector. 4. The plug-in connector according to claim 1, wherein the insulator (20) and the pressing / clamping member (30) are provided with polarization means (24, 34) cooperating with each other. An insulator (20) is provided as a conductor guide for the electrical conductor (54), which is contact-connected to the IDC terminal contact in a correspondingly shaped conductor guide passage (22). The insertion connector according to any one of claims 1 to 4.

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